package com.sky.handler;

import com.sky.constant.MessageConstant;
import com.sky.exception.BaseException;
import com.sky.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.sql.SQLIntegrityConstraintViolationException;
import java.sql.SQLNonTransientException;

/**
 * 全局异常处理器，处理项目中抛出的业务异常
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    /**
     * 捕获业务异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(BaseException ex){
        log.error("异常信息：{}", ex.getMessage());
        return Result.error(ex.getMessage());
    }


    /**
     * 用户名重复异常
     *
     */
    @ExceptionHandler
    public Result exceptionHandler(SQLIntegrityConstraintViolationException e){

        //获取到异常捕捉器捕捉的异常信息
        String str = e.getMessage();
        //若为重名异常 将错误信息返回
        // str = Duplicate entry 'username' for key 'employee.idx_username'
       if(str.contains("Duplicate entry")){
           String[] username = str.split(" ");
           String msg = username[2] + MessageConstant.ALREADY_EXOSTS;
           return Result.error(msg);
       }
       else return Result.error(MessageConstant.UNKNOWN_ERROR);
    }
}
